COMPARED WITH THE DECADES THAT CAME DIRECTLY BEFORE AND AFTER, THE 1990s have often seemed a ho-hum era, caught between its more outrageous siblings. While the ’80s arrived with a burst of big hair and shoulder pads, a synthy MTV soundtrack blasting over the Gipper’s evisceration of the welfare state, and the 2000s appeared like a deranged comet, throwing whole worlds off course, the ’90s bounced and slouched their way forward, a little bit sunny, a little bit ironic, and more or less insignificant. This was the decade so boring it was supposed to be the end of history.
And yet, three decades later, the ’90s don’t seem so dull after all. Squint a little, peer through the telescope of time, and they look not only consequential but foundational—a sort…